Press.



W. G. NYMON. PRESS. APPLICATION FILED JULY 28,1909.

949,807. Patented Feb,22,1910. a sums-sum 1.

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' W. G. NYMON.

PRESS.

APBLIGATION FILED JULY 28, 1909.

Patented Feb. 910.

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W. G. NYMON.

PRESS. APPLICATION FILED JULY 28, 1909.

Patented Feb. 22, 1910.

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Witnesses atto'ouma S WIGO G. NYMON, 0F ARGUSVILLE, NORTH DAKOTA.

PRESS.

Specification of Letters Patent.

Application filed July 28, 1909.

Patented Feb. 22, 1910. Serial No. 510,061.

To all whom it may concern:

Be it known that I, WIGO G. NYMoN, a citizen of the United States,residing at Argusville, in the county of Cass, State of North Dakota,have invented certain new and useful Improvements in Presses; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

This invention relates to improvements in presses and more particularlyto the kind employed for punching holes in metal.

One object is the provision of a construction wherein a verticalpressure is exerted on the upper end of the punch throughout thedownward movement of the latter, thus reducing the tendency of the sameto bend which frequently happens in devices of this kind wherein a leveris employed to exert the pressure on the punch, the downward movement ofthe lever causing a lateral strain on the punch.

Another object is the provision of an im proved form ofdie which can beadjusted into alinement with the punch.

A further object is the provision of a means for gripping the upper endof the punch and holding it so that the punch may be readily disengagedfrom the opening which it forms in the metal.

With these and other objects in view as will more fully hereinafterappear, the pres ent invention consists in certain novel details ofconstruction and arrangement of parts, hereinafter fully described,illustrated in the accompanying drawings and more particularly pointedout in the appended claims; it being understood that various changes inthe form, proportion, size and minor details of the device may be madewithout departing from the spirit or sacrificing any of the advantagesof the invention.

In the accompanying drawings forming part of the specification :Figure 1is a side elevation of the device. Fig. 2 is a front View thereof. Fig.3 is a longitudinal sectional View of the device. Fig. 4 is a sectionalplan view onthe line 4.& of Fig. 1. Fig. 5 is a sectional plan View onthe line 55 of Fig. 1. Fig. 6 is a similar View on the line 66 ofFig. 1. Fig. 7 is a similar view on the line 77 of Fig. 1. Fig. 8 is asimilar View on the line 88 of Fig. 1.

Similar numerals of reference are employed to designate correspondingparts throughout.

The supporting frame is designated in general by the numeral 5 and ispreferably formed of metal having a vertical side 7 which is oblong incontour and rectangular in cross section and of any desired length. Theupper end of the side 7 is provided with a cross piece 8 by means ofwhich the side is secured to the wall or other support. Extendingforwardly from the lower end of the side 7 is a lower end piece 8, fromthe outer end of which depend the supporting legs 9 and 10. The upperend of the side 7 is provided with an upper end piece 11 correspondingin length to the lower end piece 8 and lying in a vertical plane withthe latter. The intermediate portions of the end pieces 8 and 11 are ontheir opposed inner faces provided with boxings 12 and 13, and journaledin these boxings are the opposite ends of a shaft 14.

By referring now to the drawings it will be seen that adjustably securedto the shaft 14 are a plurality of disks 15. These mem bers are arrangedin spaced relation on the shaft 14 and on one of their faces areprovided with integral collars 16 which encircle the shaft, said collarshaving radial openings which are screw threaded and receive the setscrews 17 by means of which the disks are adjustably secured to theshaft. The lower of these disks is arranged at a point adjacent thelower end of the shaft and arranged on the inner face of the lower end 8and at the extremity thereof is a bed-plate 18 which bears on the lowerface of the lowermost disk. The lowermost disk is provided, adjacent itsperiphery, with a plurality of spaced openings 19 and arranged on theupper face of the disk and over the openings are dies 20. The latter arepreferably formed of cast steel or the like and are oblong in contourand substantially rectangular in cross section and at their centers areprovided with openings 21, which are adapted to aline with the openings19 of the lower disk. One end portion of the dies is provided with anorifice which receives a suitable pivot pin 22, while the opposite endportion of the dies is provided with elongated slots 23. The slots 23receive the threaded shanks of upwardly extending bolts secured to theupper face of the lower disk, the bolts having winged nuts, which areadapted to be turned so as to bear on the upper faces of the dies andsecure the latter in any of their adjusted positions, it beingunderstood that the dies may be adjusted, by virtue of the slots 23 toeither side of the openings 19. The lower disk is peripherally providedwith a plurality of spaced notches 24: which are in alinement with theopenings 19 and openings 21 of the dies, and formed in the outer end ofthe bed-plate 18 is a vertical recess 25, in which is pivoted a catch26. The catch 26 is spring pressed so that its upper end normallyextends through the recess and bears on the periphery of the lower diskso that when the latter is turned and one of the notches 24 comes to apoint in alinement with the upper end of the catch 26, the said upperend will be forced into the catch 24: and prevent further movement ofthe disk. The upper disk is arranged at a point a trifle above themiddle of the shaft let, and adjacent its periphery is provided with aplurality of spaced openings 27, which are in direct alinement with theopenings 19 of the lower disk. The intermediate disk is arranged betweenthe upper and lower disks and is provided, adjacent its periphery, witha plurality of openings 28, which are arranged in direct alinement withthe openings of the upper and lower disks.

Slidingly fitted in the openings of the upper and intermediate disks arewhat will subsequently be termed punches. These members are designatedin general by the numeral 29 and since they are identical in structure adescription of one will be sufficient. By referring now to the drawingsit will be seen that the upper end of each punch is provided with a head30, while its lower end is provided with an elongated nose 31 of adiameter to nicely fit in the opening 21 of the die. It might here bestated, that the openings of the dies will be of different diametersaccording to the size of the opening desired to be formed in the middleand so also will the nose 31 correspond in size to the openings of thedies. The length of each punch is somewhat greater than the distancebetween the upper face of the lower disk and upper face of the upperdisk and in order that the nose on each punch will be held spaced fromthe lower disk the following construction is employed :Each of thepunches is lifted until the upper end of the nose 31 is in a plane withthe lower face of the intermediate disk. This will provide a. spacebetween the lower end of the nose and die sufficient to permit the metalto be inserted between the nose and the die. When the parts are in thisposition a transverse opening is formed in the body of the punch at apoint a trifle below the lower face of the upper disk, and fitted inthis opening is a pin 32, the opposite ends of which bear on the lowerface of the uppermost disk and limit the upward movementof the punch.

A metallic washer 33 is placed over that portion of the punch betweenthe upper and intermediate disks and one of its flat surfaces is broughtto bear on the pin and encircling that portion of the punch between theupper and intermediate disks is a helical spring 3a, the oppositeterminals of which bear on the lower face of the washer and upper faceof the lowermost disk. \Vit-h this construction it is obvious that thespring will yieldingly hold the lower end of the nose elevated above thedie 20.

In order that a vertical pressure may be exerted on the punch throughoutits downward movement and a means provided for disengaging the nose fromthe metal in which it forms an opening, the following construction isemployed :By referring now to Fig. 1, it will be seen that extendinglaterally from the outer face of the side 7 and adjacent the end 11 isa. perforated lug 35 and pivoted to this lug is one end of a guide arm36, the said pivoted ends of the guide arm being provided with a recesswhich receives the lug 35 and having alining openings which registerwith the openings of the lug, the said openings receiving a pivot pin37. The intermediate portion of the guide arm 36 is provided with anannular opening 38 whichloosely receives the shaft 14. The outer or freeend of the guide arm 36 extends to a point in a vertical plane with theperiphery of the disks and formed adjacent the free end of the guide armis a vertical opening 39, which receives the shank 40 of a socket. Thehead ll of the socket extends to a point below the plane of the head 30of the punch and is provided with an opening to receive the said head30, and formed in the outer end of the guide bar 38 is an inwardlyextending recess 41, in which is pivoted a dog 43. The outer end of thehead 41 is provided with a recess which communicates with the opening ofthe head and projecting into this recess and into the opening of thehead is the lower end of the dog 4:3. The inner face of the said lowerend of the dog 43 is provided with an engaging tooth 4:4: which isadapted, when the head 30 is disposed in the socket, to engage with thelower side of the head and prevent outward movement of the latter fromthe socket. The dog t3 is yieldingly held within the recess and openingof the head 4-1 by means of a leaf spring 45, one terminal of whichbears on the inner face of the upper end portion of the dog, while theopposite terminal bears on the outer side of the shank 4.0 of thesocket, to which it is secured.

The outer end of the upper side 11 is provicled with a lug 45, the outerend of which is disposed in a vertical plane with the socket, orsubstantially so, and pivoted to the inner end of the lug 45 is one endof an operating lever 4L6. The pivoted end of the lever 46 is providedwith a recess which receives the lug 45 and has alining openings whichregister with an opening in the lug, the said openings receiving a pivotpin a7. Pivoted within the recess of the operating lever and in advanceof the lug 45 is one end of a link 48, the opposite end of which isrecessed and receives the upper end of the shank 40 of the socket towhich it is pivoted by means of a pivot bolt 49. Thus it will be seenwhen the head 30 of one of the punches is inserted into the socket andengaged by the tooth 44 of the dog by depressing the lever %6 will movethe link 48 and guide arm 30 downward, the latter carrying with it thesocket and this downward movement of the socket will force the punchdownward against the action of its spring until the nose 31 enters theopening 21 of the die. It will be observed that during the downwardmovement of the punch the force which causes it to descend will, byvirtue of the link 48, and guide arm 38, be eX- erted verticallydownward, whereby lateral strain on the punch will be eliminated and thetendency of the punch to bend removed. It will be observed that afterthe nose of the punch has been forced through the metal and theoperating arm moved upward the punch will likewise move upward, byvirtue of its head being in engagement with the teeth 4% of the dog.

In order that the metal operated upon may be prevented from movingupward with the punch a plurality of clearers 50 are employed. Each ofthese members is preferably formed of a single piece of sheet metal bentto substantially a U shape and fixedly secured to the lower face of thelower disk. Each clearer is centrally provided with an opening toreceive the nose 31 of the punch and the space between the lower end ofthe clearer and upper face of the die corresponds to the thickness ofthe metal to be operated upon, or substantially so. It might here bestated, that the bedplate 18 is provided with an opening which isadapted to aline with the openings of the lower disk and dies andthrough which the plugs punched from the metal fall.

From the foregoing it can be seen that I have provided a device which iscomparatively simple in structure and inexpensive to manufacture,embodying few parts and these so arranged that the danger of derangementwill be reduced to a minimum.

What is claimed as new, is

1. A punching machine comprising a supporting frame, a shaft journaledin said supporting frame, a plurality of spaced disks fixedly secured insaid shaft, said disks being provided with alining openings and thelowermost of said disks being provided with an adjustable die, areciprocating punch mounted in the remainder of said disks andyieldingly held above said dies, mechanism for moving the lower end ofsaid punch into and out of the die and means carried by the frame toengage the lowermost of said disks and hold the same stationary duringthe movement of the punch into and out of the die.

2. In a punching machine, a supporting frame, a reciprocating punchprovided at one end with a head, a guide arm having one end pivoted tothe supporting frame and its opposite end provided with a socket toreceive the head and a pivoted member extending into the opening of thesocket and having a tooth to engage with the lower side of the head andserving to secure the head within the socket.

3. In a punching machine, a supporting frame, a reciprocating punch, aguide arm having one end pivoted to the frame, and its opposite endprovided with a socket to receive the head, an operating lever pivotedto the frame and a link having its opposite ends pivoted to theoperating lever and one end of said socket.

4. In a punching machine, a supporting frame, a reciprocating punchprovided at one end with a head, a guide arm having one end pivoted tothe frame and its opposite end provided with a socket to receive thehead, an operating member pivoted to the guide arm and having anengaging tooth to enter the socket and bear on the lower side of thehead, an operating lever pivoted to the frame and a link having itsopposite ends pivoted to the operating lever and upper end of thesocket.

In testimony whereof, I afiEiX my signature, in presence of twowitnesses.

WIGO Gr. NYMON.

Witnesses:

FRED OBERG, ALICE M. WERNER.

